QGIS API Documentation  3.5.0-Master (bc98f86)
Classes | Typedefs | Functions
qgstracer.cpp File Reference
#include "qgstracer.h"
#include "qgsfeatureiterator.h"
#include "qgsgeometry.h"
#include "qgsgeometryutils.h"
#include "qgsgeos.h"
#include "qgslogger.h"
#include "qgsvectorlayer.h"
#include "qgsexception.h"
#include "qgsrenderer.h"
#include "qgssettings.h"
#include <queue>
#include <vector>
Include dependency graph for qgstracer.cpp:

Go to the source code of this file.

Classes

struct  comp
 
struct  QgsTracerGraph::E
 
struct  QgsTracerGraph
 Simple graph structure for shortest path search. More...
 
struct  QgsTracerGraph::V
 

Typedefs

typedef std::pair< int, double > DijkstraQueueItem
 

Functions

double closestSegment (const QgsPolylineXY &pl, const QgsPointXY &pt, int &vertexAfter, double epsilon)
 
double distance2D (const QgsPolylineXY &coords)
 
void extractLinework (const QgsGeometry &g, QgsMultiPolylineXY &mpl)
 
int joinVertexToGraph (QgsTracerGraph &g, const QgsPointXY &pt)
 
QgsTracerGraphmakeGraph (const QVector< QgsPolylineXY > &edges)
 
int point2edge (const QgsTracerGraph &g, const QgsPointXY &pt, int &lineVertexAfter, double epsilon=1e-6)
 
int point2vertex (const QgsTracerGraph &g, const QgsPointXY &pt, double epsilon=1e-6)
 
int pointInGraph (QgsTracerGraph &g, const QgsPointXY &pt)
 
void resetGraph (QgsTracerGraph &g)
 
QVector< QgsPointXYshortestPath (const QgsTracerGraph &g, int v1, int v2)
 
void splitLinestring (const QgsPolylineXY &points, const QgsPointXY &pt, int lineVertexAfter, QgsPolylineXY &pts1, QgsPolylineXY &pts2)
 

Typedef Documentation

◆ DijkstraQueueItem

typedef std::pair<int, double> DijkstraQueueItem

Definition at line 32 of file qgstracer.cpp.

Function Documentation

◆ closestSegment()

double closestSegment ( const QgsPolylineXY pl,
const QgsPointXY pt,
int &  vertexAfter,
double  epsilon 
)

Definition at line 67 of file qgstracer.cpp.

◆ distance2D()

double distance2D ( const QgsPolylineXY coords)

Definition at line 45 of file qgstracer.cpp.

◆ extractLinework()

void extractLinework ( const QgsGeometry g,
QgsMultiPolylineXY mpl 
)

Definition at line 414 of file qgstracer.cpp.

◆ joinVertexToGraph()

int joinVertexToGraph ( QgsTracerGraph g,
const QgsPointXY pt 
)

Definition at line 315 of file qgstracer.cpp.

◆ makeGraph()

QgsTracerGraph* makeGraph ( const QVector< QgsPolylineXY > &  edges)

Definition at line 128 of file qgstracer.cpp.

◆ point2edge()

int point2edge ( const QgsTracerGraph g,
const QgsPointXY pt,
int &  lineVertexAfter,
double  epsilon = 1e-6 
)

Definition at line 277 of file qgstracer.cpp.

◆ point2vertex()

int point2vertex ( const QgsTracerGraph g,
const QgsPointXY pt,
double  epsilon = 1e-6 
)

Definition at line 262 of file qgstracer.cpp.

◆ pointInGraph()

int pointInGraph ( QgsTracerGraph g,
const QgsPointXY pt 
)

Definition at line 368 of file qgstracer.cpp.

◆ resetGraph()

void resetGraph ( QgsTracerGraph g)

Definition at line 380 of file qgstracer.cpp.

◆ shortestPath()

QVector<QgsPointXY> shortestPath ( const QgsTracerGraph g,
int  v1,
int  v2 
)

Definition at line 181 of file qgstracer.cpp.

◆ splitLinestring()

void splitLinestring ( const QgsPolylineXY points,
const QgsPointXY pt,
int  lineVertexAfter,
QgsPolylineXY pts1,
QgsPolylineXY pts2 
)

Definition at line 298 of file qgstracer.cpp.